channel spacing


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channel spacing

[′chan·əl ‚spās·iŋ]
(communications)
The difference in frequency between successive radio or television channels.

channel spacing

The amount of bandwidth allotted to each channel in a communications system that transmits multiple frequencies such as fiber optics. It is measured as the spacing between center frequencies (or wavelengths) of adjacent channels. See guard band.


Channel Spacing in Optical Fibers
The first 10 Gbps example with 50 GHz spacing has a slight signal overlap, but with 100 GHz, there is none. The first example provides more bandwidth, but the overlap could be enough to cause significant crosstalk. (Illustration courtesy of Jeff Hecht.)
References in periodicals archive ?
The MxL11xx features built-in Full Spectrum Capture(TM) (FSC(TM)) technology and supports channel aggregation mode, enabling a second channel with any channel spacing to be processed within the same IC.
We utilize the Duobinary (DB) intensity modulation as the second modulation format, which we use for applying minimal channel spacing in the mixed transmission system with unequal channel spacings as well as for applying 40 Gbit/s data rate in the MLR WDM-PON.
KEY WORDS: AP-DCDM Channel Spacing Fiber Optic Systems Four Wave Mixing Effect
014 V compared with the detected voltage for a single CDMA carrier, but decreased as the channel spacing increased.
It operates at ITU wavelengths of 50 gigahertz (GHz) channel spacing, at rates up to 12.
Fully compliant with European Telecom Standard Institute (ETSI) EN 300676 standard, the radio operates within the 118-137 MHz airband with channel spacing of 25KHz, 12.
When dealing with thin-film filter process architecture, as channel spacing is reduced to increase the number of channels in a single component, greater constraints are placed on the component filter.
Commenting on the report, an analyst from TechNavio's Networking team said: "In order to decrease the manufacturing cost of network equipment and its subsequent rollout, most optical network providers, internet service providers (ISPs), and equipment manufacturers are demanding tighter channel spacing wavelength select switches.
2 The radio must be programmable for both standard 25 KHz channel spacing as well as 12.
The second one, channels compaction by location them closer to each other using smaller channel spacing between them, in that way increasing the number of channel in available transmission frequency spectrum [2].
These systems do not necessarily have to use either the 1550-nanometer window or narrow channel spacing.
Opnext's CO-DPSK technology offers the industry's best performance across all applications including metro, regional, and long haul, regardless of network configuration, network channel spacing or number of Reconfigurable Optical Add Drop Multiplexers (ROADMs).